I obviously don't find the initial claim erroneous—at least any more so than the claim that "communism has killed 100 million in the 20th century". Those are the parameters, whether useful or not.
This is a potentially very interesting discussion that I don't really feel like having to its sufficient depth. Suffice to say I don't entirely disagree with you, but I also don't think they're entirely incommensurable or disjunctive. Certainly nineteenth century industrializing economics in the Global North has a hell-of-a-lot in common with twentieth century industrial capitalism.
And what are those "most obvious derivations"?